Method of refrigeration and apparatus therefor



Dec. T8, H28. 1,695,292

m c. c. PALMER METHOD OF REFRIGERATION AND APPARATUS THEREFOR Filed Aug. 23, 1927 ATTORNEYS.

2 6 f INVENTOR.

' eration and apparatus therefor and is par-- wateric'e; I

about twlce the amount of British thermal-' units as water ice when melted in'th'e same UNITED "STATES .cnssmscl PALMER,

or new roux-Q11. v.1

METHOD OF 'B EFRIGERATION AND APPARATUS THEREFOR,

Application med August as, 1927. Serial Io. 214,825

but hasman qualities s'uperiorto those 0 ound for pound it absorbs manner and in approximately the same time. It produces a temperature of approximately v minus 40 F.'in a storage space of a refrigerator where water ice would produce ap:

roximately. plus 1 under'the same con itions.

Broadly stated, my

exposing the other side of the memberto the space to be cooled. In its ractical form (I shave particles from a bloc of 1C0 and distribute them over one face of a metal plate, the other side of which plate is expos- .ed to the chamber to be cooled. By this method the heat in the-spaceto be cooled is much more rapidly -absorbed bythe' CO I j time the refrigeration of the be controlled as desired. I will now describe anapparatuswhich.

- Fig. 1 is a front elevation;

than is the-case when the- CO is used in cakes or blocks in the ordinary manner. By,

varyin .the amount/of shavings removed from 5m block within a given period of may be used successfully ingthe carr g out of my method. 7 This apparatus is 1 ustrated in the attached drawings, in which' Fig. 2 is a' plan View of the cutter; and Fig.3 is aviewon an enlarged'scale of the mechanism for operating'the cutter. "Referring to the drawinlgs, 1 to be cooled has a metaup .the chamber late'2 laced therein and a su port 3 carries a bloc 4 of C0 The cham r l is defined by a con-J tainer 5 on, the top of which is mounted the .means for shauing C0,,-

mea-ns comprises a motor? connected to a shaft 8 upon which' is placed a worm 9 which engagesa worm wheel 10 slidably mounted on ashaft 1-1. The'worm wheel 10 is rotatablyfixed to the shaft bya key 12. The lower end of '-the shaft 11 passes throu h the container 5 and carries acutter he la uponiwhich are mounted .a plurality of: cutters 14.

CO The congealed CO as nowmanufactured is a hard non-porous sub.- stance similar in appearance to water icemethod consists of the application of con ealed CO to one side I of a'member of good eat-conductivity'a'nd chamber may.

24 to 27'Jthe Fig. 1 wherethe device isready .wifl be} apparent to thoseskilled i'n the'art.

through its. area',as will be seen 'in' .Fig 2.

of the cutter; 13 as to cut the CO uniformly .The upper end of the shaft 11 is supported- 7 by an. arm 15 in which the shaft'rotates. The arm- '151is fixed longitudinallyo'f the shaft 11 by collars 16 and-17. Avguide 18 I the arm between the shaft 11 and the uide 18. The screw-19 is supported near its ower.

spokes 22L Mounted oneach spoke is a boss 23. Each boss 23 carries a pivoted member 24:, 25, 26 or 27 These members when in the other positlon they are free of that gear. For instance, in referring .tOr Fig- 3, the members 24-and 26 are in the 75 position toyengage the gear .21, whereas-the members 25 and 27 are out of the path of the gear. Upon en agement of the-gear21 by the member 24 t e gear is rotated one tooth.-

This in turn rotates the screw '19 in' a direc- Qengages the end-.of the arm 15 opposite to the shaft 11;. A- screw 19 is threaded into end by an. armf20 :an'd'carries on its lower .enda gear '21. The worm wheel- 10 has fourwhen in one posit-iomengage the -gear21' and 80. I tion tomove the shaft 11 downwardly to- I ward the block 4 of (10,. If it is desired to increase the speed of cutting the member j 26 may be thrown v to the whereupon the gear 22 will 1 Krotatedtwo engaging-the gear the gear 21 wi be rotated three teeth for eadh rotation of the shaft 11, and if the member 27 were thrown to engage the gear, gear 21 will be rotated four-teeth osition shownfa-a teeth for. each rotation of the shaft'll." @If the member 25 is thrown to the ositionfor ,ofvthe shaft 11'. By adjusting the members 7 as desired-. 1

.l-The' shavings" which are I cut from the of thesheet ,2 the c cluced in temperature.

be quickly .moved to the -.position .shownjn n its cuttin operation.

From the rate of cutting may be -..adjus t ed The arm 15 is splitand held'together hymbolt 28, so that when thejcutter head'13"ha-s 1 moved down tense-up substantially'all of ;;j. the. block 4, the may be-;.-loosened and 1.. :Ljthe shaft 11' togeth'e'r with the arm- 15 may oreg'oingJit, will be, evident that my invention has many advantages which l-claim; Y

' gcutters 14 are so distributed over I 1. 'I"he process which in-shaving I ofi portions of a cake of CO depositing the shavings on a metal sheet and exposingithe opposite side of the sheet to a chamber to be cooled.

2. The method of refrigeration which in said chamber for a block of congealed CO or the like, means for removing small pieces of said block and a metal sheet between said block and the main portion of said chamber upon which said pieces are spread after removal from said block.

5. In refrigeration apparatus, the combi nation of a'chamber to be cooled, a support in said-chamber for a block ofcongealed CO a motor mounted upon the container,-

cutting means extending into said chamber. and cooperating with a block of CO on said support, means connecting said motor to said cutting means, and means for feeding said cutting means toward the blockasthe block is cut away. I

'6. In refrigeration apparatus, the combination of a chamber to"be cooled, a support in said chamber for a block of congealed G0,, a, motor mounted upon the container, cutting means extending into said chamber and cooperating with ablock of CO on said support, means connecting said motor to said cutting means, meansfor feeding said cutting means toward the block as the block is cut away, and means for regulating the feeding means. i

' CASSIUS o. PAEMER. 

